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https://github.com/golang/go
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df4c625d88
Add (temporary) syntax.AllowTypeLists mode to control the acceptance of type lists; the compiler doesn't set it, but existing syntax and types2 tests do so that the code remains exercised while it exists. Adjust various tests to use the type set notation. Change-Id: I798e607912552db6bfe38a7cd4324b74c6bf4d95 Reviewed-on: https://go-review.googlesource.com/c/go/+/347249 Trust: Robert Griesemer <gri@golang.org> Run-TryBot: Robert Griesemer <gri@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Robert Findley <rfindley@google.com>
31 lines
611 B
Go
31 lines
611 B
Go
// run -gcflags=-G=3
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// Copyright 2021 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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type Recv <-chan int
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type sliceOf[E any] interface {
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~[]E
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}
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func _Append[S sliceOf[T], T any](s S, t ...T) S {
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return append(s, t...)
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}
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func main() {
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recv := make(Recv)
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a := _Append([]Recv{recv}, recv)
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if len(a) != 2 || a[0] != recv || a[1] != recv {
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panic(a)
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}
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recv2 := make(chan<- int)
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a2 := _Append([]chan<- int{recv2}, recv2)
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if len(a2) != 2 || a2[0] != recv2 || a2[1] != recv2 {
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panic(a)
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}
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}
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